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1、第19卷第5期皮革科学与工程Vol119,No152009年10月LEATHERSCIENCEANDENGINEERINGOct12009文章编号:1004-7964(2009)05-0023-05合成革用聚氨酯-纳米SiO2原位杂化涂层的制备及其透气、透湿性能研究11,2*2233陈意,范浩军,袁继新,刘若望,张才,付善淼(1.四川大学制革清洁技术国家工程实验室,四川成都610065;2.温州大学化学与材料科学学院,浙江温州325024;3.浙江五洲实业有限公司,浙江丽水323000)摘要:采用原位有机-无机杂化技
2、术将SiO颗粒引入合成革用聚氨酯涂层中,并对杂化涂层的截面形态、透气透湿2性、孔径分布和比表面积进行了检测。结果表明:当SiO2的含量不高于115%时,原位生成的SiO2颗粒不仅在聚氨酯涂层中分布均匀,且其粒径被控制在70~150nm;由于有机聚氨酯和无机纳米SiO2颗粒间形成了相间孔隙,因此聚氨酯涂层的透气(氢气、氮气和氧气)、透湿性随纳米SiO2含量的提高而逐渐增加。当SiO2的含量超过115%时,原位生成的SiO2颗粒属微米级且团聚明显,其阻透作用将导致聚氨酯涂层透气、透湿性能的降低。本实验所制备的聚氨酯-纳米
3、SiO2原位杂化涂层有望改善合成革产品的穿着舒适性和卫生性能。关键词:聚氨酯;纳米SiO2;原位杂化;湿法贝斯;合成革中图分类号:TS565文献标识码:ANano-SiO2In-situHybridPolyurethaneLeatherCoatingwithEnhancedPermeability11,2*2233CHENYi,FANHao-jun,YUANJi-xin,LIURuo-wang,ZHANGCai,FUShan-miao(1.NationalEngineeringLaboratoryforCleanTe
4、chnologyofLeatherManufacture,SichuanUniversity,Chengdu610065,China;2.CollegeofChemistryandMaterialsScience,WenzhouUniversity,Wenzhou325024,China;3.ZhejiangWuzhouIndustryCo.,Ltd.,Lishui323000,China)Abstract:Anovelin-situorganic-inorganicnanohybridtechniquecombin
5、edwithindustrializedwetphaseinversioncoa-ting-formingprocesswasdevelopedforthemodificationofpolyurethane(PU)leathercoatingwithnano-SiO2.Duringthewetphaseinversionprocess,nano-SiO2particleswerein-situgeneratedsynchronouslyaspolyurethaneresincoagulated.Scanningel
6、ectronmicroscope(SEM)analysisindicatedthatwhentheSiO2concentrationwaslimitedwithin115%,thesizescaleofin-situgeneratednano-SiO2particlesrangedfrom70nmto150nm,whichwerewel-lseparatedanddispersedun-iformlythroughoutthePUcoating.Afternanohybridization,extramesopore
7、s,existedatthepolymer/nano-SiO2interface,weredetectedinthePUcoatingbynitrogenadsorption/desorptionexperiment.Thevapourpermeabilitywerecorrelatedwithenhancedgas(hydrogen,nitrogenandoxygen)andwatervaporpermeability,whichcouldimprovethewearcomfortofthePUleather.Ne
8、vertheless,whentheSiO2concentrationwasincreaseduptomorethan115%,micro-SiO2particlesandag-glomeratesdominatedthroughoutthePUmatrix,whichobstructedmasstransportationandlowered
